this is a super high quality IEM, very comfortable and isolating, with sparkly and punchy sound that lends itself best to bass-intensive recordings - whether this means reggae or rock, church organ or rhythm&blues is up to you to decide. it's a little less dependent on amplification in my opinion than the UERM. you'll be surprised to listen to a piano, for instance, on this one: it acquires bigger stomp without being thrown off balance completely. really good also with some classical recordings of big orchestras. watch the volume control, this is a very dynamic IEM!